feat(dondominio): create record if it does not exist

internal/provider/providers/dondominio/create.go

@@ -0,0 +1,39 @@
+package dondominio
+
+import (
+	"context"
+	"net/http"
+	"net/netip"
+
+	"github.com/qdm12/ddns-updater/internal/provider/constants"
+)
+
+// See https://dondominio.dev/en/api/docs/api/#dns-zone-create-service-dnscreate
+func (p *Provider) create(ctx context.Context, client *http.Client, ip netip.Addr) (err error) {
+	recordType := constants.A
+	if ip.Is6() {
+		recordType = constants.AAAA
+	}
+	requestData := struct {
+		APIUser     string `json:"apiuser"`
+		APIPasswd   string `json:"apipasswd"`
+		ServiceName string `json:"serviceName"`
+		Name        string `json:"name"` // Name for the DNS zone
+		Type        string `json:"type"`
+		Value       string `json:"value"`
+	}{
+		APIUser:     p.username,
+		APIPasswd:   p.password,
+		ServiceName: p.name,
+		Name:        p.BuildDomainName(),
+		Type:        recordType,
+		Value:       ip.String(),
+	}
+
+	_, err = apiCall(ctx, client, "/service/dnscreate", requestData)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

internal/provider/providers/dondominio/provider.go

@@ -112,6 +112,15 @@ func (p *Provider) Update(ctx context.Context, client *http.Client, ip netip.Add
 		ids = aaaaIDs
 	}
 
+	if len(ids) == 0 {
+		err = p.create(ctx, client, ip)
+		if err != nil {
+			return netip.Addr{}, fmt.Errorf("creating %s record for %s: %w",
+				recordType, p.BuildDomainName(), err)
+		}
+		return ip, nil
+	}
+
 	for _, id := range ids {
 		err = p.update(ctx, client, id, ip)
 		if err != nil {